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+/*
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+ * (C) Copyright 2002-2004
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+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
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+ *
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+ * (C) Copyright 2002
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+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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+ * Marius Groeger <mgroeger@sysgo.de>
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+ *
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+ * (C) Copyright 2002
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+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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+ * Alex Zuepke <azu@sysgo.de>
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+ *
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+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+ *
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+ */
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+
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+#include <common.h>
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+#include <asm/arch/hardware.h>
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+void serial_setbrg (void)
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+{
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+ unsigned short divisor = 0;
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+
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+ switch (gd->baudrate) {
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+ case 1200: divisor = 3072; break;
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+ case 9600: divisor = 384; break;
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+ case 19200: divisor = 192; break;
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+ case 38400: divisor = 96; break;
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+ case 57600: divisor = 64; break;
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+ case 115200: divisor = 32; break;
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+ default: hang (); break;
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+ }
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+
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+ /* init serial UART0 */
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+ PUT8(U0LCR, 0);
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+ PUT8(U0IER, 0);
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+ PUT8(U0LCR, 0x80); /* DLAB=1 */
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+ PUT8(U0DLL, (unsigned char)(divisor & 0x00FF));
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+ PUT8(U0DLM, (unsigned char)(divisor >> 8));
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+ PUT8(U0LCR, 0x03); /* 8N1, DLAB=0 */
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+ PUT8(U0FCR, 1); /* Enable RX and TX FIFOs */
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+}
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+
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+int serial_init (void)
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+{
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+ unsigned long pinsel0;
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+
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+ serial_setbrg ();
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+
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+ pinsel0 = GET32(PINSEL0);
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+ pinsel0 &= ~(0x00000003);
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+ pinsel0 |= 5;
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+ PUT32(PINSEL0, pinsel0);
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+
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+ return (0);
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+}
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+
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+void serial_putc (const char c)
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+{
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+ if (c == '\n')
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+ {
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+ while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
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+ PUT8(U0THR, '\r');
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+ }
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+
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+ while((GET8(U0LSR) & (1<<5)) == 0); /* Wait for empty U0THR */
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+ PUT8(U0THR, c);
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+}
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+
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+int serial_getc (void)
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+{
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+ while((GET8(U0LSR) & 1) == 0);
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+ return GET8(U0RBR);
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+}
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+
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+void
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+serial_puts (const char *s)
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+{
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+ while (*s) {
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+ serial_putc (*s++);
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+ }
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+}
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+
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+/* Test if there is a byte to read */
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+int serial_tstc (void)
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+{
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+ return (GET8(U0LSR) & 1);
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+}
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+
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